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Hypericum ascyron L.
Great St. Johnswort
Synonyms: Hypericum pyramidatum
USDA Symbol: HYAS80
USDA Native Status: Native to U.S.
A stout, erect, 2-6 ft. plant with large, elliptic leaves and 2 in., yellow, 5-petaled flowers with very bushy stamens.
The scattered distribution of this plant in Ontario is thought to match historical aboriginal encampments. (Ontario Native Plants 2002)
Plant CharacteristicsDuration: Perennial Habit: Herb Leaf:
Green Fruit: Size Class:
Bloom InformationBloom Color: Yellow
Bloom Time: Jun , Jul , Aug
CT , DE , IA , IL , IN , KS , MA , MD , ME , MI , MN , MO , NE , NH , NJ , NY , OH , PA , VT , WI , WV Canada: ON Native Distribution:
Que. to MN, s. to NJ, PA, IN, s.w. IA & n.e. KS Native Habitat:
Moist places; stream banks; thickets; rich woods USDA Native Status: L48(N), CAN(N)
Growing ConditionsWater Use: Medium
Light Requirement: Sun , Part Shade , Shade
Soil Moisture: Moist , Wet
CaCO3 Tolerance: Low
Soil Description: Moist soils
Conditions Comments: Not Available
BenefitConspicuous Flowers: yes
PropagationDescription: Not Available
Seed Collection: Not Available
Seed Treatment: Cold stratify.
Commercially Avail: yes
From the National Suppliers Directory
According to the inventory provided by Associate Suppliers, this plant is available at the following locations:
Toadshade Wildflower Farm
- Frenchtown, NJ
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Record Modified: 2012-07-10
Research By: TWC Staff